<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>多个样式表</title>
</head>

<body>
    <link rel="stylesheet" type="text/css" href="mystyle.css">
    <style>
        h1 {
            color: orange;
        }
    </style>
   

    <body>

        <h1>这是一个标题</h1>
        <p>本文档的样式是外部样式表和内部样式的组合。</p>
    </body>

</html>